A new lithium-ion battery can not only withstand stretching and twisting, but can get stabbed with needles and cut in half with razor blades—and then heal itself to continue providing power to a device.
https://spectrum.ieee.org/stretchable-lithium-ion-battery
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This new battery can survive being tortured by various methods, including bring cut in half. The researchers foresee this being used for more wearable technology in the future. What other technology could these versatile batteries enable us to create?
The Romans had that selfrepairing technology 2000 years ago. We lost so much knowledge of our ancestors.